Minkowski Fractal Slot Loop Antenna with eleven frequencies for various Applications

G. Ashwini, K. Satyavathi


The novel fractal Dielectric Resonator Antenna is proposed and investigated. Material used is FR4 epoxy having dielectric constant 4. First iteration provides bandwidth of 20% and second iteration gives bandwidth of 27% at 7GHz. Constant gain of 5 dB is present over entire range of frequency. Crosspolar level is 20 dB below copolar level. Structure is excited by coaxial feed at an offset. This study provides entirely new structure for bandwidth enhancement.A multiband fractal CPW-fed slot antenna loaded with a dielectric resonator conforming to more than one wi-fi requirements is provided in this article. The Minkowski fractal geometry is utilized to generate more than one frequency bands as well as to provide a miniaturized design compared to its Euclidean counterpart. The concept behind setting the dielectric load is to serve a dual motive of improving the impedance bandwidth of the antenna on the top frequency band in addition to improving the general benefit of the antenna. The slot loop acts as a hybrid antenna appearing the venture of each an antenna as well as afeed mechanism for the dielectric slab to radiate. layout hints regarding closed form formulae and equal version which includes lumped resonators, dispensed resonators and impedance transformers of the dielectric loaded fractal slot antenna is furnished to present an perception into the functioning of the antenna. The mirrored image coefficient parameters of the antenna yield a close fit among the circuit model and people obtained from complete wave simulator.

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